/Engine/Source/Runtime/CoreUObject/Public/Serialization/FindReferencersArchive.h
Retrieves the number of references from PotentialReferencer list of TargetObjects
the number of objects which were referenced by PotentialReferencer.
int32 GetReferenceCounts ( [TMap](API\Runtime\Core\Containers\TMap)< class [UObject](API\Runtime\CoreUObject\UObject\UObject) *, int32 > & out_ReferenceCounts, [TMultiMap](API\Runtime\Core\Containers\TMultiMap)< class [UObject](API\Runtime\CoreUObject\UObject\UObject) *, class [FProperty](API\Runtime\CoreUObject\UObject\FProperty) * > & out_ReferencingProperties ) const